package com.hqq.structure.facade;

/**
 * Disk
 * Created by heqianqian on 2017/3/11.
 */
public class Disk {
    public void startUp() {
        System.out.println("Disk startUp...");
    }

    public void shutDown() {
        System.out.println("Disk shutDown...");
    }
}
